<template>
  <div class="login-page">
    <el-card>
      <template #header>黑马面经运营后台</template>

      <el-form ref="form" :model="form" :rules="rules" autocomplete="off">
        <el-form-item label="用户名" prop="username">
          <el-input placeholder="输入用户名" v-model="form.username"></el-input>
        </el-form-item>

        <el-form-item label="密码" prop="password">
          <el-input
            type="password"
            placeholder="输入用户密码"
            v-model="form.password"
          ></el-input>
        </el-form-item>

        <el-form-item class="tc">
          <el-button @click="login" type="primary">登 录</el-button>

          <el-button @click="reset">重 置</el-button>
        </el-form-item>
      </el-form>
    </el-card>
  </div>
</template>

<script>
export default {
  name: 'login-page',
  data () {
    return {
      form: {
        username: '',
        password: ''
      },
      // 定义一套元素合法性检查的规则
      rules: {
        username: [
          {
            required: true,
            message: '请输入用户名',
            trigger: ['blur', 'change']
          },
          {
            min: 5,
            max: 11,
            message: '长度在 5 到 11 个字符',
            trigger: ['blur', 'change']
          }
        ],
        password: [
          {
            required: true,
            message: '请输入密码',
            trigger: ['blur', 'change']
          },
          {
            pattern: /^\w{5,11}$/,
            message: '请输入 5 到 10 位的密码',
            trigger: ['blur', 'change']
          }
        ]
      }
    };
  },
  methods: {
    reset () {
      this.$refs.form.resetFields();
    },
    async login () {
      try {
        // 调用 validate() 方法，检查表单是否合法
        await this.$refs.form.validate();
        console.log('表单合法', this.form);
        // 调用vuex的action loginAction完成登录请求并存储token到vuex中(内存)
        await this.$store.dispatch('user/loginAction', this.form);
        // 登录成功，跳转到首页
        this.$message.success('登录成功');
        this.$router.push('/article');
      } catch (error) {
        console.log('表单不合法', error);
        // console.log(error);
      }
    }
  }
};
</script>

<style lang="scss" scoped>
.login-page {
  min-height: 100vh;
  background: url(@/assets/login-bg.svg) no-repeat center / cover;
  display: flex;
  align-items: center;
  justify-content: center;
  .el-card {
    width: 420px;
    ::v-deep .el-card__header {
      height: 80px;
      line-height: 40px;
      background: rgba(114, 124, 245, 1);
      text-align: center;
      color: #fff;
      font-size: 18px;
    }
  }
  .el-form {
    padding: 0 20px;
  }
  .tc {
    text-align: center;
  }
}
</style>
